/Engine/Plugins/Interchange/Runtime/Source/FactoryNodes/Public/InterchangeMeshFactoryNode.h
Query whether Tangents will be stored at 16 bit vs 8 bit precision.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Interchange | FactoryNode | Mesh") bool GetCustomUseHighPrecisionTangentBasis ( bool & AttributeValue ) const